Search results for "Communication."
showing 10 items of 9236 documents
A simulation model for wideband MIMO vehicle-to-vehicle fading channels in T-junction propagation environments
2010
In this paper, we propose a high-performance simulation model for wideband multiple-input multiple-output (MIMO) vehicle-to-vehicle (V2V) fading channels in T-junction propagation environments. The so-called Riemann sum method (RSM) is applied for the parametrisation of the simulation model. Furthermore, the statistical properties of the wideband MIMO V2V channel simulation model, such as the space-time-frequency cross-correlation function (STF-CCF), the two-dimensional spatial cross-correlation function (2D spatial CCF) and the temporal auto-correlation function (ACF) are studied. Finally, the high accuracy of the proposed simulation model is demonstrated by comparing the correlation prope…
Non-convex power allocation games in MIMO cognitive radio networks
2013
Consideramos un escenario de reparto del espectro, basado en la detección, en una red de radio cognitiva MIMO donde el objetivo general es maximizar el rendimiento total de cada usuario de radio cognitiva optimizando conjuntamente la operación de detección y la asignación de potencia en todos los canales, bajo una restricción de interferencia para los usuarios primarios. Los problemas de optimización resultantes conducen a un juego no convexo, que presenta un nuevo desafío a la hora de analizar los equilibrios de este juego. Con el fin de hacer frente a la no convexidad del juego, utilizamos un nuevo concepto relajado de equilibrio, el equilibrio cuasi-Nash (QNE). Se demuestran las condicio…
Estimating Applicability of New Mobile Content Formats to Organizational Use
2003
Innovations on information and communication technology reshape organizational communication. Our ability to estimate applicability of new technologies and content formats to organizational use has been limited to generic quantitative methods at the level of technologies and industries and elaborate qualitative methods targeting specific phenomena at the organizational level. In this paper we estimate quantitatively the applicability of MMS, SMS, XHTML, and XML to organizational use based on an analysis of all communication of an organization unit. We enumerate over 700 communication genres using a genre-based information systems planning method, categorise them with taxonomy of communicati…
4-5 gadīgu bērnu saskarsmes prasmju sekmēšana lomu rotaļās
2021
Bakalaura darba autore – Liene Melkere. Darba vadītāja - Dr.paed. Ineta Helmane. Bakalaura darba nosaukums: 4-5 gadīgu bērnu saskarsmes prasmju sekmēšana lomu rotaļās. Darba mērķis: teorētiski pamatot un empīriski pārbaudīt saskarsmju prasmju sekmēšanas iespējas pirmsskolas izglītības iestādē 4-5 gadu veciem bērniem lomu rotaļās. Darba pirmajā nodaļā apkopota literatūra par saskarsmes prasmju būtību un nozīmi, 4-5 gadīgu bērnu vecumposma saskarsmes prasmēm un to sekmēšanu lomu rotaļās. Otrajā nodaļā tika veikts pētījums par saskarsmju prasmju sekmēšanu lomu rotaļās. Tiek raksturota pētījuma bāze, pētījuma metodes un izvirzīti kritēriji un rādītāji. Bakalaura darbs sastāv no 60 lappusēm, sat…
Autonomy-Supportive and Controlling Styles of Teaching
2015
Autonomy-supportive and controlling styles of teaching are usually considered to be the opposite ends of a single continuum. An alternative view, however, is that individuals can perceive both styles simultaneously, which suggests that they are different constructs ( Bartholomew, Ntoumanis, Ryan, Bosch, & Thøgersen-Ntoumani, 2011 ). Using cluster analysis, Study 1 (N = 160) confirmed that both teaching styles were perceived by students. Four clusters appeared depending on the student’s score on the measures of autonomy and controlling styles (high autonomy–high control; low autonomy–low control; high autonomy–low control; low autonomy–high control). Participants in the high autonomy–lo…
Bagheria e l’amministrazione Cinque Stelle (Bagheria and Five Star local government)
2016
Il paper studierà il caso di Bagheria in provincia di Palermo, Comune amministrato da Patrizio Cinque sindaco del Movimento 5 Stelle da giugno 2014. A partire dall’analisi degli elementi che ne hanno contribuito a determinare il successo elettorale (connessi allo scenario e alla campagna elettorale), si prenderanno in considerazione le peculiarità dell’amministrazione locale pentastellata nei suoi primi due anni, approfondendo in particolare la relazione tra portavoce, attivisti ed elettori prima e durante il mandato, i rapporti con gli altri Meetup locali e nazionali, le strategie comunicative, i progetti, la capacità di resistenza agli scandali che hanno colpito l’assessore all’urbanistic…
Identity profiles and digital engagement among Finnish high school students
2018
Developing a stable personal identity is considered a more precarious task in today’s society than hitherto. Skilful digital engagement may, however, constitute a valuable asset in necessary identity exploration and commitment. Applying a person-oriented approach, we examined for the first time how identity profiles are associated with digital engagement, operationalized as digital competence, gaming seriousness, type of internet activity and excessive ICT use. After controlling for gender, life satisfaction and parental SES, this study of a Finnish high school sample (N = 932) revealed that adolescents with future commitments and some exploration of options (achievement, searching moratori…
Dataa näkyvissä: Läpinäkyvyys algoritmien ja datan journalistisessa hyödyntämisessä
2021
Läpinäkyvyyden käsite on noussut keskeiseksi viestinnän, median ja politiikan tutkimuksessa sekä viestinnän ja politiikan käytäntöjen eettisessä arvioinnissa. Läpinäkyvyyttä on esitetty keinoksi ylläpitää ja kasvattaa luottamusta journalistista työtä ja sen tuotteita kohtaan interaktiivisessa media- ja viestintäympäristössä. Tiedontuotannon ja päätöksenteon perustuessa yhä enemmän dataan ja sen prosessointiin läpinäkyvyys on noussut keskeiseksi käsitteeksi myös algoritmisen päätöksenteon kohdalla. Tässä artikkelissa tarkastelemme läpinäkyvyyden roolia dataa ja algoritmeja sekä journalismia koskevassa keskustelussa ja esitämme mahdollisuuksia dataan ja algoritmeihin tukeutuvan journalismin l…
A flexible and reconfigurable 5G networking architecture based on context and content information
2017
The need for massive content delivery is a consolidated trend in mobile communications, and will even increase for next years. Moreover, while 4G maturity and evolution is driven by video contents, next generation (5G) networks will be dominated by heterogeneous data and additional massive diffusion of Internet of Things (IoT). The current network architecture is not sufficient to cope with such traffic, which is heterogeneous in terms of latency and QoS requirements, and variable in space and time. This paper proposes architectural advances to endow the network with the necessary flexibility helping to adapt to these varying traffic needs by providing content and communication services whe…
Designing the 5G network infrastructure: a flexible and reconfigurable architecture based on context and content information
2018
5G networks will have to offer extremely high volumes of content, compared to those of today’s. Moreover, they will have to support heterogeneous traffics, including machine-to-machine, generated by a massive volume of Internet-of-Things devices. Traffic demands will be variable in time and space. In this work, we argue that all this can be achieved in a cost-effective way if the network is flexible and reconfigurable. We present the Flex5Gware network architecture, designed to meet the above requirements. Moreover, we discuss the links between flexibility and reconfigurability, on the one side, and context awareness and content awareness, on the other; we show how two of the building…